If an artist has full control of their IP, yes they can just take their music down.
Dissatisfaction with the payout is only one aspect of why some artists are leaving Spotify. I personally find it super weird how much Spotify profit is getting funnelled into arm manufacturing. Like why should listening to music help new AI drone tech to get developed? Tf?
I'm sorry man. I recently visited turkey as a foreigner, and was shocked how far my overseas dollars went. I spoked to a Turkish taxi driver in the US, who reminisced 2007 where the lira was almost at the USD. Now you can get a full meal for $2.50 USD. I spent a night at a 5 star hotel in Istanbul, for the same price as a capsule hotel in Tel Aviv.
A lot of foreigners will think 'oh boy cheap holiday' seeing this news, but really it should make their stomachs turn. The common people suffer over such a frustratingly avoidable problem.